Glass-furnace and method of manufacturing glass articles therein.



Patented Aug. 23, 1910.

'R. S. PEASE.

APPLIGATION FILED UGT. 15, 1907,

GLASS TURNAGB AND METHOD 0F MANUFACTURING GLASS ARTICLES THEREIN.

Hman s'rArEs PATENT* oEEIcE. Y

-ROGER. s. VPEAsE, or ALLEGHENR'PENNSYEVANIA, AssIGNon 'ro ALFRED m. LEE,

TRUSTEE, or PITTsBUnG, EENNSYLVANIA;

" GLAB-S-FURN'ACE AND METHOD 0F MANUFACTURING'GLASS 'ARTICIES THEREIN.

lpecication ofLetters Patent. -I Patented- Aug'. 23, 19.10.

,apeueeuen med oeteber 15, 1907. serieu Nessus?.

To all whom 'it Amay concern:

Be'it known that I, ROGERS. PEA-sa, a citizen of the United States, residing at Allegheny, in the county of Allegheny and' State of Pennsylvania, have invented certain new. and useful Improvements in Glass-Furnaces and Methods'of Manufacturing Grlass Articles Therein, of which the following is a ysgeciiication, reference beinghad therein tof t e accompanying drawing.

My invention consists in improvementsin glass, furnaces or tanks and 1s particularly Y Aadapted for use in the manufacture of wina g ass furnace or tank provid dow/glass, by drawing the cylinder from :milten metal.

I and mwardly from the outsideatmosphere,

and it is' constructed and adapted tofperate in the manner more fully hereinafter de scrib'ed. Referrin to the drawings:'Figure.1 is a lon 'tudin sectional view of a ortion of ed) with my improved construction illustrating the drawing operation. Fig. 2is' a similar view showing' the drawing opening closedand illusf trat' the; eirculation of the gases to reheatt eglass'. Fig. 3 is a partial plan view piirtly" in section, indicated by the line III.

I. of Fig. 1; Fi 4 is a cross section on' the line'IV. IV. o Fig. 1. Fig. As'a secr tional detail view showing a floating dam.

maintained with which communicates a chamber 3, preferably extending outwardly at the end ofthe .tank within inclosing walls the wall 4, sullicientto provide a space 6 throu h which the'gases 'or'air may circulate, t e said. cover being provided'with 'one or more openings 7 4preferably circular,v

'through which the cylinder 8 ma be drawn as 4illustated'in Fig. 1.A Thev iameter of the opening 7 is desi ed with relation to the diameter of. the c'y inder to be drawn as to somewhat closely approach the cylinder leaving 'a slight-intervenin space, `wliereby.` the incoming air through t 1e drawing operation will circulate -around the exterior of the cylinder cooling it and facilitating the drawin operation. 'f

The ront wall 9 of the tank 2 constitutes a iue for either the gases of combustion or as an inlet for the incoming air, being provided with a hollow interior liuc 10 passing up through the wall 9, and into a' stack 11 o any desired height, to create the necessary draft,l which may be if desired provided with a ldamper 12 to cut ot'f'or open the circulation, although this is not abso' llutely necessary. y

13 is a shut-ofi gate of suitable refractory material located Within the flue 10, andver-J tica ly movable therein by means of connection 14, and Alever at other raising or' lowering mechanism 15, whereby the gate may be lowered .into orhbelow the surface of the molten glasses/shown in Fig. l, orraised vided atfi'ts bottom withh 4taperededge a and at each end'with inwardly beveled ends has clearly shown in'Fig. 4'.y The advan` tage of such construction/isf that the gate readily venters. the lassby/,its thinV edge, 2 represents a tank or furnace 1n which the main body of molten glass is'held and whileleavng the g ass/'raised without rais- -ing with it and adhering excess glass. I thereby obviate the Itendency ofA the glass to Vclog up thele opening, thusproviding a clear opening at all times forjpassage of the gases and air.

, cling to the lower edge of the damper,and

The gebe 13 mekee e" iee'ee fie withal-fthe Hue vlOlpermitting of upward` circulation of .K the" gases, atone for both sides of. gate,

the purpose of which isV to permit the incoming air indicated by the arrows 1n: Fig. l, to circulate upwardly to ,sta-ck`11.

16 represents a front opening, at the front end'of the wall-of chamber 3, into Which'the air may likewise enter,which opening 'may be .closed by the insertion of a brick orother suitable stopper 17, when the circulationis reversed as in Fig.

18 is a Hue leading downwardly 'through the front wall of chamber .3, and communieatin therewith through pipe 6 leading out-- wardlgy to a stack or any suitable point of discharge.

19 is a shutoff gate or valve adapted to be raised or lowered by threaded stein 2O and hand wheel 21 or by any other suitable means, to open or close the circulation through flue 18.

22 is a closing stopper by which the opening 47 may be closed as in' Fig. 2,' when the glass is being re-heated in chamber 3 during which time the circulation' is outwardly .A from the tank overthe surface of thelzfglass in chamber' 3, and downwardly through flue' 18 for such a length of time as is necessary' to re-heat the surface vmetala.`

As stated above there may be one o r more openings 7l allot which may be opened or\ closed at the same time, or drawn from either opening by partitioning the chamber longitudinally vbetween each opening, and providing separate cut'- olfgates 13 and separate lues 18 for each com partment, thereby renderin each compartment independent of each ot er, but all com.-

municati'ng with the main body of glass in-- the tank. As will be obvious flat sheets mayv be also drawn from chamber 3 byv lmerely arran ing the opening 7 to suit, making them ong and slot-like in shape. f

In Fi'g. 5, I show a' modifiedfconstruction in which the circulation of the gases from -the furnace to the chamber is checked, by a floating dam-13, adapted -to close the opening in the manner indicated and which may be substitutedfor the gate 13 with 'good results.

The glass in chamber S-havinv been heated to the desired degree of heat imparted to it from the main body and the circulating gases the gate-13 is lowered in the gla completely closing the opening, whereupon the glass 1n the chamber willbecome fined. The cover22 is .then removed and the cylinder 8 is formed, the outside air entering around it through' openings 6 and 16'cooling the base of the-"cylinder and further 4assisting the operation. After the cylinder is drawn to the desired-length it may be severed from the mass ofglass in chamberf by restab lishing the circulation of the hot gases outwardly from the tank by 'raising'gate 1 9: and closing openin 16 whereupon the cylinder will be severe and may be removed,

4.take flue communicatin glass may be'- osmose The advantages of thecirculation secured by .the novel construction will be appreciated by all'those familiar with the manufacture of machine drawn glass.

The construction is comparatively simple and cheap, the operations are few and do not involve the raising or lowering of any heavy bodies, andthe invention as-a whole will be 'found to greatly simplify the operation of making mechanically. drawn glass. Having ,described my invention, what I claim is:

1. The combination with the main tank, ofa laterally arranged drawin tank hav-l ing a drawing chambercommunicating with and maintaining the level of molten glass continuouslywith the glass in the tankandl provided with a permanent cover having a drawing opening and Aintervening gas circulation space, a removable cover for said opening, 'a downwardly and outwardly directed offwith said circulation space, anda contro ling valve for said flue, substantially set forth. 2. The combinationf'with the main tank, of a laterally arranged drawing tank havand maintaining the level'v of-.molten glass continuously. .with the glass' in the vtank and provided with a permanent cover -having a 'drawing opening and intervening gas circulationxsp'ace, a vertically adjustable cuto gate'located between thetl main tank and saiddrawing chamber, a renovable cover for the drawin opening. a downwardly and outwardlyd cating'with said circulation space, anda set forth.

.3.'The combination with 'the main tank, offa laterally arranged Adrawing tank, a wall provided with a flue leading vupwardly be ire'cted 4oi-take flue communi- 'Ying a drawing chamber conununicating with controlling valve forsaid flue, substantially tween said tanks, landa vertically movable ct-olgate closing the direct circulation of gas from one tank to the other.

4. The combination with the main tank, of a laterally arranged drawing tank having astationary cover and providedwith a due leading upwardly between said tanks, and a vertically movable .cut-olf gate closing the vdirect circulation of gas from one tank to theother.

5. The combination with the main tank, of a laterally arranged drawingtank, having a4 stationary.; cover and provided witha flue leading upwardly between said tanks to a stack, and a v"vertically movable cut-olf gate located in said ue.

6.,T he combination with the main tank, of a laterally arranged drawingtank, an intervening partition wall having a flue lead-- itig to a stack, and a vertically movable cut o gate located in'said ue.' f

7. The method of making lass cylinders consisting in drawing "the ey inder from a tank connnunicating with a niain tank, establishing a circulation of incoming cooling air from the atmosphere around 4the base of the cylinder to reduce the'temperature of the glass at the zone of formation, establishing a circulation of heated air atthe zone of severance to divide the completed cylinder from the n iass of glass, and then establishing or conturning the circulation of heated air across that portion of the molten' lass `from 'which 10 hetlyhnder was drawn, su stantially as set ROGER S. PEASE. lVitnesses i O. M. CLARKE, CHAS, S. LEPLEY.

It is hereby certified that in Letters Patent 967,966, granted AugnstQS, 1910, upon the application of Roger Si Pease, of Allegheny, Pennsylvania, for an improve- I nient in Glass-Furnaces and Methods 'of Manufactnring Glass Articles Tberein, an error appears in the printed specification' requiring correction, as follows: Page l, line 7 5, the word atl should read 011-; and that said Letters Patent should be Lead with thiscorrecton therein that-the same rnay conform to the record of the case in thePatent Oflce. i

.Signed and sealed this 23rd day of August, D., 1910'.

[Smm I i y 1f. A. -TENNANT,

' Acting 'ommz's'ioner of Patents.

lt is hereby certified that in Letters Patent No. 967,966, grunted August 23, 1910, npon thc application of Roger S. Pease, of Allegheny, Pennsylvania, for an improvement in Glnsslfornnces and Methods of lifanufacturing Glass Articles Therein, an error appears in the printed specification requiring correction, as follows: Page 1, line 75, the word at" should rend or.' and that the seid Letters Patent should be rend with this correction therein that the saune muy conform to the record of the case in thc Patent Office.

Signed and sealed this 23rd day of August, A. D., 1910'.

l". A. TENNANT,

Acting Commissioner' of Patents.

[smul 

